Re: [PATCH v2 8/8] iommu/arm-smmu-v3: Support IOMMU_DOMAIN_NESTED

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On Fri, Sep 06, 2024 at 03:28:31PM -0300, Jason Gunthorpe wrote:
> On Fri, Aug 30, 2024 at 02:04:26PM -0300, Jason Gunthorpe wrote:
> 
> > Really, this series and that series must be together. We have a patch
> > planning issue to sort out here as well, all 27 should go together
> > into the same merge window.
> 
> I'm thinking strongly about moving the nesting code into
> arm-smmuv3-nesting.c and wrapping it all in a kconfig. Similar to
> SVA. Now that we see the viommu related code and more it will be a few
> hundred lines there.

+1 for this. I was thinking of doing that when I started drafting
patches, yet at that time we only had a couple of functions. Now,
with viommu_ops, it has grown.

> We'd leave the kconfig off until all of the parts are merged. There
> are enough dependent series here that this seems to be the best
> compromise.. Embedded cases can turn it off so it is longterm useful.

You mean doing that so as to merge two series separately? I wonder
if somebody might turn it on while the 2nd series isn't merge...

Thanks
Nicolin




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